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Guidelines For Tungsten Electrodes VI

Rare Earth(Color Code: Gray)


Rare earth tungsten electrodes (AWS classification EWG) contain unspecified additives of rare earth oxides or hybrid combinations of different oxides, but manufacturers are required to identify each additive and its percentage on the package. Depending on the additives, desired results can include: a stable arc in both AC and DC processes, greater longevity than thoriated tungsten, the ability to use a smaller size diameter tungsten for the same job, use of a higher current for similar sized tungsten and less tungsten spitting.

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